Kramer Electronics, Ltd.

Kramer Electronics, Ltd. Preliminary USER MANUAL Models: VM-5ARII, Video Audio Distribution Amplifier VM-20ARII, 1:20 Programmable Video Audio Distributor VM-1411, 1:10 Video/Audio Distributor

Contents Contents 1 Introduction 1 2 Getting Started 1 2.1 Quick Start 3 3 Overview 5 3.1 The VM-5ARII Video Audio Distribution Amplifier 5 3.2 The VM-20ARII 1:20 Programmable Video Audio Distributor 5 3.3 The VM-1411 1:10 Video/Audio Distributor 6 4 Your Distributors 4.1 Your VM-5ARII Video Audio Distribution Amplifier 6 6 4.2 Your VM-20ARII 1:20 Programmable Video Audio Distributor 4.3 Your VM-1411 1:10 Video/Audio Distributor 8 10 5 Installing the VM-20ARII in a Rack 13 6 Connecting the Distribution Amplifiers 6.1 Connecting the VM-5ARII Video Audio Distribution Amplifier 14 14 6.2 Connecting the VM-20ARII Video Audio Distributor 6.3 Connecting the VM-1411 1:10 Video/Audio Distributor 16 18 7 Technical Specifications 20 Figures Figure 1: VM-5ARII Video Audio Distribution Amplifier 7 Figure 2: VM-20ARII 1:20 Programmable Video Audio Distributor 9 Figure 3: VM-20ARII Underside 10 Figure 4: VM-1411 1:10 Video/Audio Distributor 11 Figure 5: Connecting the VM-5ARII 15 Figure 6: Connecting the VM-20ARII 17 Figure 7: Connecting the VM-1411 19 Tables Table 1: VM-5ARII Video Audio Distribution Amplifier 8 Table 2: VM-20ARII 1:20 Programmable Video Audio Distributor 10 Table 3: VM-20ARII Underside 10 Table 4: VM-1411 Functions 12 Table 5: VM-5ARII Technical Specifications 20 Table 6: VM-20ARII Technical Specifications 21 Table 7: VM-1411 Technical Specifications 21 i

Introduction 1 Introduction Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been providing a world of unique, creative, and affordable solutions to the vast range of problems that confront the video, audio, presentation, and broadcasting professional on a daily basis. In recent years, we have redesigned and upgraded most of our line, making the best even better! Our 1,000-plus different models now appear in 11 groups 1 that are clearly defined by function. Thank you for purchasing the Kramer VM-5ARII, VM-20ARII, VM-1411 Video Distribution Amplifiers, which are ideal for: Any professional A/V system requiring a compact, high-quality DA Retail stores and other point-of-sale display systems Security and CCTV applications Studio RGB/YUV distribution Each package includes the following items: The VM-5ARII, VM-20ARII, or VM-1411 Distributor Power cord 2 This user manual 3 2 Getting Started We recommend that you: Unpack the equipment carefully and save the original box and packaging materials for possible future shipment Review the contents of this user manual Use Kramer high-performance high-resolution cables 4 1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; GROUP 3: Control Systems; GROUP 4: Format/Standards Converters; GROUP 5: Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP 7: Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9: Room Connectivity; GROUP 10: Accessories and Rack Adapters; GROUP 11: Sierra Products 2 We recommend that you use only the power cord supplied with this device 3 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com 4 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com 1

Getting Started To achieve the best performance: Use only good quality connection cables 1 to avoid interference, deterioration in signal quality due to poor matching, and elevated noise levels (often associated with low quality cables). Avoid interference from neighboring electrical appliances that may adversely influence signal quality and position your Kramer product away from moisture, excessive sunlight and dust 1 Available from Kramer Electronics on our Web site at http://www.kramerelectronics.com 2 KRAMER: SIMPLE CREATIVE TECHNOLOGY

2.1 Quick Start Getting Started This quick start chart summarizes the basic setup and operation steps. 3

Getting Started 4 KRAMER: SIMPLE CREATIVE TECHNOLOGY

Overview 3 Overview This section gives an overview of the: VM-5ARII Video Audio Distribution Amplifier, see section 3.1 VM-20ARII 1:20 Programmable Video Audio Distributor, see section 3.2 VM-1411 1:10 Video/Audio Distributor, see section 3.3 3.1 The VM-5ARII Video Audio Distribution Amplifier The Kramer VM-5ARII is a high-performance distribution amplifier for composite or SDI video and unbalanced stereo audio signals. It takes one input, provides correct buffering and isolation and distributes the signal to five identical outputs. More specifically, the VM-5ARII features: High bandwidth 360MHz (-3dB) 1 composite video input and 5 outputs on BNC connectors 1 unbalanced stereo input and 5 outputs on RCA connectors Looping input Selectable input signal termination Video level and equalization, and audio level controls Video AC/DC coupling detection Standard 19 1U rack mount size 3.2 The VM-20ARII 1:20 Programmable Video Audio Distributor The VM-20ARII is a multi-format, high-performance distribution amplifier that can be configured for composite or SDI video and unbalanced stereo audio signals. It can be configured as a 1:10 distribution amplifier for s-video (Y/C) signals or a 1:5 distribution amplifier for RGBS signals, both with unbalanced stereo audio. More specifically, the VM-20ARII features: High bandwidth of 430MHz (-3dB) 1 video input and 20 outputs on BNC connectors 1 unbalanced stereo input and 20 outputs on RCA connectors Looped input capability Grouped audio level control Selectable input signal termination 5

Your Distributors Audio level and video level and equalization controls Video AC/DC coupling selection Standard 19 2U rack mount size 3.3 The VM-1411 1:10 Video/Audio Distributor The VM-1411 is a dual mode distribution amplifier for composite video and balanced stereo audio signals. It can be configured as a 1:5 distribution amplifier for s-video (Y/C) signals with balanced stereo audio. More specifically, the VM-1411 features: Dual mode configuration as a 1:10 (composite) or 1:5 (s-video) DA Grouped audio level controls Level (gain) and EQ (peaking) controls Looping input Selectable input signal termination Video AC/DC coupling selection Standard 19 1U rack mount size 4 Your Distributors This section defines your: VM-5ARII Video Audio Distribution Amplifier, see section 4.1 VM-20ARII 1:20 Programmable Video Audio Distributor, see section 4.2 VM-1411 1:10 Video/Audio Distributor, see section 4.3 4.1 Your VM-5ARII Video Audio Distribution Amplifier Figure 1 and Table 1 define the VM-5ARII. 6 KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your Distributors Figure 1: VM-5ARII Video Audio Distribution Amplifier 7

Your Distributors Table 1: VM-5ARII Video Audio Distribution Amplifier Features # Feature Function 1 Illuminated Power Switch Illuminated switch for turning the unit ON or OFF 2 VIDEO IN BNC Connector Connects to the video source 3 75/Hi-Z Pushbutton Press in for input 75 termination, release for no termination 4 DC/AC Pushbutton Press in for DC coupling, release for AC coupling 5 VIDEO LOOP BNC Connector Connects to a display 6 VIDEO GAIN Control Adjusts the video gain level 7 VIDEO EQ. Control Adjusts the cable compensation equalization level 8 VIDEO OUT BNC Connectors Connects to the video acceptor (from 1 to 5) 9 AUDIO IN RCA Connectors (L and R) Connects to the L and R channels of the audio source 10 AUDIO LOOP RCA Connectors (L and R) Connects to an audio acceptor 11 AUDIO GAIN R Controls the volume on the right audio channel 12 AUDIO GAIN L Controls the volume on the left audio channel 13 AUDIO OUT RCA RCA Connectors (L and R) Connects to the audio acceptors (from 1 to 5) 14 Power Connector with Fuse AC connector for supplying power to the unit 4.2 Your VM-20ARII 1:20 Programmable Video Audio Distributor Figure 2, Figure 3, Table 2 and Table 3 define the VM-20ARII. 8 KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your Distributors Figure 2: VM-20ARII 1:20 Programmable Video Audio Distributor 9

Your Distributors Table 2: VM-20ARII 1:20 Programmable Video Audio Distributor Features # Feature Function 1 Illuminated Power Switch Illuminated switch for turning the unit ON or OFF 2 STEREO/BAL pushbuttons Select stereo or balanced mode of operation (pushed=balanced). 3 OUT 1-20 (L, R) audio GAIN trimmers Controls audio level of outputs 1 to 20 4 OUT 1-20 EQ. and GAIN trimmers Control video level and cable equalization of outputs 1 to 20. 5 1:20, 2x1:10, 4x1:5, 1:10+2x1:5 AUDIO Operating Mode Switches 6 1:20, 2x1:10, 4x1:5, 1:10+2x1:5 VIDEO Operating Mode Switches 7 VIDEO INPUTS (1-4) and LOOP (1-4) BNC Connectors 8 AUDIO IN (L and R) (1-4) RCA Connectors 9 AUDIO OUT (L and R) (1-20) RCA Connectors 10 VIDEO OUTPUTS (1-20) BNC Connectors Programming switches for audio mode of operation as follows: 1:20 Splits input 1 to all 20 outputs 2x1:10 Splits input "1" to outputs "1-10" and input "3" to outputs "11-20". 4x1:5 Splits four inputs to four consecutive sets of five outputs each. 1:10+2x1:5 Splits input "1" to outputs "1-10", input "3" to outputs "11-15" and input "4" to outputs "16-20" Programming switches for video mode of operation as follows: 1:20 Splits input 1 to all 20 outputs. 2x1:10 Splits input "1" to outputs "1-10" and input "3" to outputs "11-20". 4x1:5 Splits four inputs to four consecutive sets of five outputs each. 1:10+2x1:5 Splits input "1" to outputs "1-10", input "3" to outputs "11-15" and input "4" to outputs "16-20" Connect to the video sources and input loops Connect to the L and R channels of the audio source Connect to the audio acceptors (from 1 to 20) Connect to the video acceptors (from 1 to 20) 11 Power Connector with Fuse AC connector for supplying power to the unit # Feature Function 12 TERM/75 Switches Select 75 for termination (up) or (IN1-IN4) HI-Z for looping (down) 13 AC/DC Switches (IN1-IN4) Select DC (up) or AC (down) coupling Table 3: VM-20ARII Underside Features Figure 3: VM-20ARII Underside 4.3 Your VM-1411 1:10 Video/Audio Distributor Figure 4 and Table 4 define the VM-1411. 10 KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your Distributors Figure 4: VM-1411 1:10 Video/Audio Distributor 11

Your Distributors Table 4: VM-1411 Features # Feature Function 1 Illuminated Power Switch Illuminated switch for turning the unit ON or OFF 2 L AUDIO Trimmer (B) Controls audio level of left channel B 3 R AUDIO Trimmer (B) Controls audio level of right channel B 4 AUDIO MODE (2 x 1:5, 1:10) Pushbutton Selects either 1:10 or 2 x 1:5 audio operation: 1:10 position (pressed) splits input "A" to all 10 outputs 2 x 1:5 position (released) splits inputs "A" and "B" to outputs "A" (1-5) and "B" (1-5) respectively. 5 L AUDIO Trimmer (A) Controls audio level of left channel A 6 R AUDIO Trimmer (A) Controls audio level of right channel A 7 EQ Trimmer (B) Controls cable equalization of channel B video outputs 8 LEVEL Trimmer (B) Controls video level of channel B video outputs 9 VIDEO MODE (2 x 1:5, 1:10) Pushbutton Selects either 1:10 or 2 x 1:5 video operation: 1:10 position (pressed)- splits input "A" to all 10 outputs 2 x 1:5 position (released)- splits inputs "A" and "B" to outputs "A" (1-5) and "B" (1-5) respectively 10 EQ Trimmer (A) Controls cable equalization of channel A video outputs 11 LEVEL Trimmer (A) Controls video level of channel A video outputs 12 5 AUDIO outputs LA, RA Terminal Block Connectors Connect to audio acceptors A (1 to 5): LA to the left, RA to the right 13 L, R Terminal Block Connectors Connects to audio input source A 14 L, R Terminal Block Connectors Connects to audio input source B 15 5 AUDIO outputs LB, RB Terminal Block Connectors Connect to audio acceptors B (1 to 5): LB to the left, RB to the right 16 OUT 1 5 BNC Connectors Connect to channel A video acceptors (1 to 5) 17 LOOP BNC Connector Connect to video acceptor or display 18 Channel A 75 Pushbutton Press for 75 termination on channel A, release for looping Hi-z 19 Channel A DC Pushbutton Press for DC coupling, release for AC coupling 20 IN A BNC Connector Connects to video input source A 21 IN B BNC Connector Connects to video input source B 22 Channel B 75 Pushbutton Press for 75 termination on channel B, release for looping Hi-z 23 Channel B DC Pushbutton Press for DC coupling, release for AC coupling 24 LOOP BNC Connector Connect to video acceptor or display 25 OUT 1 5 BNC Connectors Connect to channel B video acceptors (1 to 5) 26 Power Connector with Fuse AC connector for supplying power to the unit 12

Installing the VM-20ARII in a Rack 5 Installing the VM-20ARII in a Rack This section describes how to install the VM-20ARII in a rack. Before Installing in a rack Before installing in a rack, be sure that the environment is within the recommended range: Operating temperature range +5º to +45º C (41º to 113º F) Operating humidity range 10 to 90% RHL, non-condensing Storage temperature range -20º to +70º C (-4º to 158º F) Storage humidity range 5 to 95% RHL, non-condensing How to Rack Mount To rack-mount a machine: 1. Attach both ear brackets to the machine. To do so, remove the screws from each side of the machine (5 on each side), and replace those screws through the ear brackets. CAUTION!! When installing on a 19" rack, avoid hazards by taking care that: 1. It is located within the recommended environmental conditions, as the operating ambient temperature of a closed or multi unit rack assembly may exceed the room ambient temperature. 2. Once rack mounted, enough air will still flow around the machine. 3. The machine is placed straight in the correct horizontal position. 4. You do not overload the circuit(s). When connecting the machine to the supply circuit, overloading the circuits might have a detrimental effect on overcurrent protection and supply wiring. Refer to the appropriate nameplate ratings for information. For example, for fuse replacement, see the value printed on the product label. 5. The machine is earthed (grounded) in a reliable way and is connected only to an electricity socket with grounding. Pay particular attention to situations where electricity is supplied indirectly (when the power cord is not plugged directly into the socket in the wall), for example, when using an extension cable or a power strip, and that you use only the power cord that is supplied with the machine. 2. Place the ears of the machine against the rack rails, and insert the proper screws (not provided) through each of the four holes in the rack ears. Note that: In some models, the front panel may feature built-in rack ears Detachable rack ears can be removed for desktop use Always mount the machine in the rack before you attach any cables or connect the machine to the power If you are using a Kramer rack adapter kit (for a machine that is not 19"), see the Rack Adapters user manual for installation instructions (you can download it at: http://www.kramerelectronics.com) 13

Connecting the Distribution Amplifiers 6 Connecting the Distribution Amplifiers This section describes how to connect the: VM-5ARII Video Audio Distribution Amplifier, see section 6.1 VM-20ARII 1:20 Programmable Video Audio Distributor, see section 6.2 VM-1411 1:10 Video/Audio Distributor, see section 6.3 6.1 Connecting the VM-5ARII Video Audio Distribution Amplifier To connect the VM-5ARII, as shown in the example in Figure 5, do the following 1 : 1. Connect the input video source (for example, a composite video player) to the VIDEO INPUT BNC connector. 2. Connect the input audio source (for example, the audio from a composite video player) to the AUDIO IN RCA connectors noting the right and left channels. 3. Connect the VIDEO OUT 1 to 5 BNC connectors to up to 5 acceptors 2 (for example, composite video recorders). 4. Connect the AUDIO OUT 1 to 5 RCA connectors to up to 5 acceptors 2 (for example, the audio input on the composite video recorders). 5. If needed, connect the VIDEO LOOP BNC connector to an acceptor (for example, a composite video display or another VM-5ARII) and set the termination pushbutton to 75. 6. Connect the power cord 3 to the unit (not shown in the illustration) and then to the mains electricity. Switch on the power. 7. If needed, adjust the VIDEO GAIN or EQ controls or the AUDIO GAIN on the front panel. 1 Switch OFF the power on each device before connecting it to your VM-5ARII. After connecting, switch on the VM-5ARII power and then switch on the power on each device 2 You are not required to connect two acceptors 3 Use the power cord supplied with the unit 14

Connecting the Distribution Amplifiers Figure 5: Connecting the VM-5ARII 15

Connecting the Distribution Amplifiers 6.2 Connecting the VM-20ARII Video Audio Distributor To connect the VM-20ARII, as shown in the example in Figure 6, do the following 1 : 1. Connect up to 4 input video sources (for example, composite video players) to the VIDEO INPUTS 1 to 4 BNC connectors. 2. Connect up to 4 input audio sources (for example, the audio from the video players) to the AUDIO INPUTS RCA connectors 1 to 4 noting the right and left channels. 3. Connect the VIDEO OUT 1 to 20 BNC connectors to up to 20 acceptors 2 (for example, composite video recorders). 4. Connect the AUDIO OUT 1 and 20 RCA connectors to up to 20 acceptors 2 (for example, the audio input on the video recorders). 5. If needed, connect the VIDEO LOOP BNC connector to an acceptor (for example, a composite video display or another VM-20ARII) and set the termination pushbutton to 75. 6. Connect the power cord 3 to the unit (not shown in the illustration) and then to the mains electricity. Switch on the power. 7. If needed, adjust the VIDEO GAIN or EQ controls or the AUDIO GAIN on the front panel. 8. Set the mode of operation by pressing one of the operating mode control switches (one set for audio and one set for video) as follows: Press the 1:20 switch to split input 1 to all 20 outputs Press the 2x1:10 switch to split input "1" to outputs "1-10" and input "3" to outputs "11-20" Press the 4x1:5 switch to split four inputs to four consecutive sets of five outputs each Press the 1:10+2x1:5 switch to split input "1" to outputs "1-10", input "3" to outputs "11-15" and input "4" to outputs "16-20" 1 Switch OFF the power on each device before connecting it to your VM-20ARII. After connecting, switch on the VM-20ARII power and then switch on the power on each device 2 You are not required to connect all the acceptors 3 Use the power cord supplied with the unit 16

Connecting the Distribution Amplifiers Figure 6: Connecting the VM-20ARII 17

Connecting the Distribution Amplifiers 6.3 Connecting the VM-1411 1:10 Video/Audio Distributor To connect the VM-1411, as shown in the example in Figure 7, do the following 1 : 1. Connect up to 2 input video sources (for example, composite video players) to the VIDEO IN A and VIDEO IN B BNC connectors. 2. Connect up to 2 input audio sources (for example, the audio from the composite video players) to the L and R terminal block connectors associated with IN A and IN B. 3. Connect the VIDEO OUT 1 to 5 BNC connectors to up to 5 acceptors 2 (for example, composite video recorders) on channels A and B. 4. Connect the AUDIO OUT 1 to 5 L and R terminal block connectors to up to 5 acceptors 2 (for example, the audio input on the video recorders) on channels A and B. 5. If needed, connect the VIDEO LOOP BNC connector for each channel to an acceptor (for example, a composite video display or another VM-1411) and set the termination pushbutton to 75 for each connected channel. Set AC or DC coupling as needed. 6. Connect the power cord 3 to the unit (not shown in the illustration) and then to the mains electricity. Switch on the power. 7. If needed, adjust the VIDEO GAIN or EQ controls or the AUDIO GAIN on the front panel. 8. Set the mode of operation by pressing one of the operating mode control switches as follows: Press the 2x1:5/1:10 switch to split input "A" to all 10 outputs Release the 2x1:5/1:10 switch to split inputs "A" and "B" to outputs sets "A" and "B" respectively. 1 Switch OFF the power on each device before connecting it to your VM-1411. After connecting, switch on the VM-1411 power and then switch on the power on each device 2 You are not required to connect all the acceptors 3 Use the power cord supplied with the unit 18

Connecting the Distribution Amplifiers Figure 7: Connecting the VM-1411 19

7 Technical Specifications INPUT: Technical Specifications The technical specifications 1 of the distribution amplifiers are shown in Table 5, Table 6, and Table 7: Table 5: VM-5ARII Technical Specifications 1 video, composite or single component, looping, 1Vpp/75 on BNC connectors with termination switch; 1 audio stereo looping, +4dBu/50k on RCA connectors OUTPUT: 5 video, composite or single component, 1 Vpp/75 on BNC connectors; 5 audio stereo, +4dBu/150, on RCA connectors MAX. OUTPUT: VIDEO BANDWIDTH (-3dB): AUDIO BANDWIDTH (-3dB): Video: 2.2Vpp; Audio: 27Vpp 360MHz 60kHz DIFF. GAIN: 0.03% DIFF. PHASE: 0.06Deg K-FACTOR: 0.05% VIDEO S/N RATIO: AUDIO S/N RATIO: AUDIO THD: 76dB 85dB 0.021% (1V, 1kHz.) CONTROL: Video gain: -1 to +1.8dB; audio gain: -40 to +6dB; EQ.: 0 to +2.5dB, audio: 0.2 to +6dB. COUPLING: POWER SOURCE: DIMENSIONS: WEIGHT: ACCESORIES: DC/AC selectable (video), AC (audio.) 230V AC, 50/60Hz, (115V U.S.A.) 21VA. 19 x 7 x 1U W, D, H, rack mountable. 1.94kg (4.3lbs) approx. Power cord. 1 Specifications are subject to change without notice 20

Technical Specifications Table 6: VM-20ARII Technical Specifications INPUT: 4 video looping, 1Vpp/75 on BNC connectors with termination switches; 4 audio stereo (or balanced mono) +4dBu/50k, on RCA connectors OUTPUT: VIDEO BANDWIDTH (-3dB): AUDIO BANDWIDTH (-3dB): Video: 20 (1:20, 2x1:10, 4x1:5, 1:10, 2x1:5) 1Vpp/75 on BNC connectors; Audio: 20 (1:20, 2x1:10, 4x1:5, 1:10, 2x1:5) stereo or balanced mono, +4dBu/50, on RCA connectors 430MHz 110kHz DIFF. GAIN: 0.06% DIFF. PHASE: VIDEO S/N RATIO: AUDIO S/N RATIO: VIDEO CONTROL: AUDIO CONTROL: VIDEO COUPLING: AUDIO COUPLING: 0.08Deg 76dB 80dB -1.2/+1.7dB level, 0/+2.4dB EQ +0.3/+6.2dB AUDIO THD+NOISE: 0.02% 2nd HARMONIC: 0.002% POWER SOURCE: DIMENSIONS: WEIGHT: ACCESORIES: INPUT: OUTPUT: MAX. OUTPUT: VIDEO BANDWIDTH (-3dB): AUDIO BANDWIDTH (-3dB): DC/AC user selectable AC (input), DC (output) Universal switching power supply: 100-240 VAC, 50/60Hz 18.5VA 19 x 7 x 2U W, D, H, rack mountable 3.6kg (8lbs) approx Power cord Table 7: VM-1411 Technical Specifications 2 composite/single component video, looping, 1Vpp/75 on BNC connectors with termination switch; 2 balanced audio stereo up to +4dBu/50k on detachable terminal blocks 2x5 composite/single component video, 1Vpp/75 on BNCs; 2x5 balanced audio stereo 4dBu/50, on detachable terminal blocks Video: 1.8Vpp; Audio: +24dBu 240MHz 60kHz DIFF. GAIN: 0.2% DIFF. PHASE: 0.2Deg K-FACTOR: 0.05% VIDEO S/N RATIO: AUDIO S/N RATIO: CONTROL: COUPLING: 77dB AUDIO THD: 0.02% POWER SOURCE: DIMENSIONS: WEIGHT: ACCESORIES: OPTIONS : Better than 87dB @1Vpp Front accessible trimmers for video gain and EQ. and for audio L and R levels DC or AC (video); AC (audio) 230V AC 50/60Hz (115V U.S.A.) 19.5VA 19 x 7 x 1U W, D, H, rack mountable 2.9kg (6.4lbs) approx Power cord Kramer 3.5mm to IR Emitter Control Cable (C-A35/IRE-10); Kramer 3.5mm to Dual IR Emitter Control Cable (C-A35/2IRE- 10); 15 meter and 20 meter IR emitter extension cables 21

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For the latest information on our products and a list of Kramer distributors, visit our Web site: www.kramerelectronics.com where updates to this user manual may be found. We welcome your questions, comments and feedback. Caution Safety Warning: Disconnect the unit from the power supply before opening/servicing. Kramer Electronics, Ltd. Web site: www.kramerelectronics.com E-mail: info@kramerel.com P/N: 2900-001005 REV 2